Re: Global documentation for Rails'' ActionView

Frederick Cheung
Wed, 23 Apr 2008 15:54:25 -0000

On 23 Apr 2008, at 16:49, Perry Smith wrote:

>
> I got myself rather confused yesterday.  It started when I put a
> "form_remote_tag" in a helper method.  I get the error that
_erbout is
> not defined.  I dug around and found suggestions to put it into a
> template and do render(:partial => ''foo'', ...).
>
> I was curious what magic render did that the helper was not doing on
> its
> own.  That led me to bump into more confusion.  Obviously the code
> works
> but I''m somewhat lost as to how.  Here is my specific question.
>
> In render :partial, it calls render_for_text which sets
> @performed_render to true.  That implies to me that I can not call
> render again for another partial but I know from past experience
> that I
> can.
it''s reset later in this particular case
>
>
> Both of these tie back to the environment that is set up when a
> template
> is rendered.  I''d like to know where that code is at and if there
is
> some high''ish level documentation that can help me get started in
> understanding how these things work.
>

start from base.rb in rails/actionpack/lib/action_view/ (and also in
action_controller). As far as I know there isn''t documention about
this level of implementation detail other than the code. A lot of this
is currently being tidied up.

Fred

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